DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer Instruction Manual

June 13, 2024
DENALI

Brushless 20V 13-Inch String Trimmer

ALT 4823B-00

Important Safety Instructions

WARNING
When using electric gardening appliances, basic safety precautions should always be followed to reduce the risk of fire, electric shock, and personal injury, including the following:

Read All Instructions

  1. Avoid dangerous environment – Don’t use appliances in damp or wet locations.
  2. Don’t use in rain.
  3. Keep children away – All visitors should be kept at a distance fromm work area.
  4. Dress properly — Do not wear loose clothing or jewelry. They can be caught in moving parts. Use of rubber gloves and substantial footwear is recommended when working outdoors. Wear protective hair covering to contain long hair.
  5. Use safety glasses — Always use face or dust mask if operation is dusty.
  6. Use right appliance — Do not use appliance for any job except that for which it is intended.
  7. Avoid unintentional starting – Don’t carry plugged-in appliance with finger on switch. Be sure switch is off when plugging in
  8. Don’t force appliance – /t will do the job better and with less likelihood of a risk of injury at the rate for which it was designed.
  9. Don’t overreach — Keep proper footing and balance at all times.
  10. Stay alert — Watch what you are doing. Use common sense. Do not operate appliance when you are tired.
  11. Store idle appliances indoors – When not in use, appliances should be stored indoors in dry, and high or locked-up place — out of reach of children.
  12. Maintain appliance with care — Keep cutting edge sharp and ctean for best performance and to reduce the risk of injury. Follow instructions for lubricating and changing accessories. Inspect appliance cord periodically, and if damaged, have it repaired by an authorized service facility.
  13. Check damaged parts – Before further use of the appliance, a guard or other part that is damaged should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment of moving parts, binding of  moving parts, breakage of parts, mounting, and any other condition that may affect its operation. A guard or other part that is damaged should be properly repaired or replaced by an authorized service center unless indicated elsewhere in this manual.
  14. Always wear approved eye protection. Use protective glasses or goggles, even if you use a visor.
  15. WARNING: Only accessories and attachments determined by manufacturer are acceptable for use with the appliance. Usage of any other accessory or attachment may increase the risk of injury!
  16. Wear appropriate personal hearing protection during use. Under some conditions and durations of use, noise from this appliance may contribute to hearing loss.
  17. Do not operate the appliance while under the influence of alcohol or drugs.
  18. Keep guards in place and in working order.
  19. Keep hands and feet away from the cutting area.
  20. Clear the area to be cut before each use. Remove all objects such as rocks, broken glass, nails, wire, or string that can be thrown or become entangled in the cutting attachment.
  21. Always hold the appliance firmly, with both hands on the handles, while operating. Wrap your fingers and thumbs around the handles.
  22. Do not operate the appliance in gaseous or explosive atmospheres. Motors in these appliances create sparks, and the sparks might ignite fumes.
  23. If you strike a foreign object with the appliance or it becomes entangled, stop the tool immediately, check for damage and have any damage repaired before further operation is attempted. Do not operate with a broken guard or spool.
  24. Check the cutting attachment at regular short intervals during operation, or immediately if there is a noticeable change in cutting behavior.
  25. When replacing the cutting line, use the nyton line with thickness of no more than 0.08 in (2 mm). Using heavier lines than recommended by the manufacturer increases the load on the motor and reduces its operating speed. This results in overheating and damage to the appliance.
  26. To reduce the risk of serious injury, never use wire or metal-reinforced line or other material in place of the nylon cutting lines. Pieces of wire could break off and be thrown at high speed toward the operator or bystanders.
  27. To reduce the risk of injury from loss of control, never work on a ladder or on any other insecure support. Never hold the cutting attachment above waist height.
  28. WARNING: lf the trimmer should start to vibrate abnormally, stop the motor and check immediately for the cause. Vibration is generally a warning of trouble. A loose head may vibrate, crack, break or come off the trimmer, which may result in serious or fatal injury. Make sure that the cutting attachment is properly fixed in position. if the head loosens after fixing it in position, replace it immediately. Never use a trimmer with a loose cutting attachment.
  29. WARNING: Replace a cracked, damaged or worn-out cutting head immediately, even if damage is limited to superficial cracks. Such attachments may shatter at high speed and cause serious or fatal injury.
  30. Prevent unintentional starting. Ensure the switch is in the off position before connecting the battery pack, picking up or carrying the string trimmer. Do not carry the string trimmer with fingers on the switch or while the string trimmer is switched on. This may lead to accidents.
  31. Disconnect the battery pack from the string trimmer before making any adjustments, changing accessories, or storing the string trimmer. Such preventive safety measures reduce the risk of starting the string trimmer accidentally.
  32. Use the string trimmer only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
  33. Do not use a battery pack or string trimmer that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behavior resutting in fire, explosion or risk of injury.
  34. Do not expose the battery pack or string trimmer to fire or excessive temperatures. Exposure to fire or temperature above 26S °F (130 °C) may cause explosion.
  35. Follow all charging instructions and do not charge the battery pack outside of the temperature range specified in these instructions. Charging improperly or at temperatures outside of the specified range may damage the battery and increase the risk of fire.
  36. Servicing must be performed by a qualified repair person using only identical replacement parts. This will ensure that the safety of the string trimmer is maintained.
  37. Do not modify or attempt to repair the string trimmer or the battery pack except as indicated in these instructions.

1.1 Vibration and noise reduction
To reduce the impact of noise and vibration emission, limit the time of operation, use low-vibration and low-noise operating modes as well as wear personal protective equipment. Take the following points into account to minimise the vibration and noise exposure risks:

  1. Only use the machine as intended by its design and these instructions.
  2. Ensure that the machine is in good condition and well maintained.
  3. Use correct attachments for the machine and ensure they are in good condition.
  4. Keep atight grip on the handles/gripping surfaces.
  5. Maintain the machine in accordance with these instructions and keep it well lubricated (where appropriate).
  6. Plan the work schedule to spread any high vibration tool use across a longer period of time.

1.2 Residual risks
Even if you are operating this machine in accordance with all the safety requirements, potential risks of injury and damage remain. The following dangers can arise in connection with the structure and design of this machine:

  1. Health defects resulting from vibration emission if the machine is used over long periods of time or not adequately managed and properly maintained.
  2. Injuries and damage to property due to broken attachments or the sudden impact of hidden objects during use.
  3. Risk of property damage and injury caused by foreign objects flung toward the operator or bystanders.
  4. Risk of getting entangled by the tool’s motor.
  5. Risk of inhaling small dust and particles into the lungs.
  6. Hearing loss due to prolonged exposure to noise.

SAVE THESE INSTRUCTIONS

Description of Symbols

2.1 Signal words
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols and the
explanations with them deserve your careful attention and understanding. The symbol warnings do not,
by themselves, eliminate any danger. The instructions and warnings they give are no substitutes for proper
accident prevention measures.
WARNING
Be sure to read and understand all safety instructions in this user manual, including all safety alert symbols such as “DANGER”, “WARNING”, and “CAUTION” before using this machine. Failure to following all instructions listed below may result in electric shock, fire, and/or serious personal injury.
The definitions below describe the level of severity for each signal word. Please read the manual and pay attention to these symbols.
DANGER | DANGER indicates a hazardous situation which, if not avoided, will result in death rss: or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could result in NAOT death or serious injury.
CAUTION, used with the safety alert symbol, indicates a hazardous situation which, Nike) if not avoided, could result in minor or moderate injury.
NOTICE NOTICE is used to address practices not related to personal injury.
2.2 Symbol explanation
A CAUTION
Some of the following symbols may be used on your machine. Study them and learn their meaning.
Proper interpretation of these symbols will allow you to operate the machine better and more safely.

Symbol Na me Designation/Explanation
V Volts Voltage (potential)
A Amperes Current
Hz Hertz Frequency (cycles per second)
W Watt Power
kg Kilograms Weight
min Minutes Time
s Seconds Time
no No load speed Rotational speed, at no load
n Rated speed Maximum attainable speed
…  /min Revolutions or reciprocation per minute Revolutions, strokes,

surface speed, orbits, etc. per minute
IPX4| Ingress protection degree| Protection from splashing water
| Direct current| Type or a characteristic of current
| Read manual symbol.| Alerts user to read manual.
---|---|---
| Wear eye protection symbol.| Always wear safety goggles or safety glasses with  side shields and a full face shield when operating this machine.

Specifications

Model number ALT4823B-00
Rated voltage

20 V ****
No-load speed no| Low: 5000/min High: 6000/min
Cutting mechanism| Bump head
Cutting tine type| 0.080″ (2.0 mm) nylon twist line
Cutting width| 13″ (33 cm)
Recommended operating temperature| +5 to +104 °F (-15 to +40 °C)
Recommended storage temperature| +32 to +104 °F (0 to +40 °C)
Recommended charging temperature| +41 to +104 01 (+5 to +40 °C)
Net weight| approx. 4.96 tbs (2.25 kg) (without battery, adjustable front- assist-handle (B) and guard(E))
Dimensions (W x H x D)| approx. 64.2 x 8.7 x 4.7″ (163 x 22 x 12 cm) (without battery, adjustable front-assist-handle (B) and guard (E))

Recommended Spare Parts

Part name Type Model number
Trimmer head (H) SP trimmer head (with cutting line (K))  STH4818

Product Description

DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Product
Description

A. Hinge
Connects and locks the two foldable shafts.
B. Adjustable front-assist handle
For easy control of the trimmer during cutting.
C. Speed selector
This string trimmer gives you the choice to operate at a more efficient speed to extend the run time for larger jobs or accelerate the trimmer speed for high- performance cutting.
D. Rear handle
Ergonomic handle improves comfort and grip.
E. Guard
Reduces the risk of injury from foreign objects flung backwards toward the operator and from contact with the cutting attachment.
F. Lock OFF button
Helps prevent accidental or unauthorized activation of the trigger. It must be depressed before the trigger can be activated.
G. Trigger switch
Turns the string trimmer on and off.
H. Trimmer head (bump head)
Stores the cutting line and releases the cutting line when the head is lightly tapped on the ground during operation.
I. Release tab
J. Lower cover
K. Cutting line
L. Line-cutting blade
Steel blade on the guard that maintains the cutting line at the proper length.
M. Storage rail
N. Storage adapter
O. Storage hole

Intended Use

» This machine is intended for trimming grass, light weeds, and other similar vegetation along walls, fences, trees, and borders.
» This machine is intended for private use only.
» This machine is not intended for professional use.

Before First Use

DANGER
Risk of suffocation!

Keep any packaging materials away from children and pets — these materials are a
potential source of danger, e.g. suffocation.
» Remove all the packing materials.
» Remove and review all components before use.
» Check the machine for transport damages.
» Do not use the machine if it appears damaged.

Assembly

CAUTION

» To prevent accidental starting that could cause serious personal injury, always remove the battery pack from the machine when assembling parts, making adjustments, cleaning, or when not in use.
» If any parts are damaged or missing, do not operate this machine until the parts are replaced. Use of this machine with damaged or missing parts could result in serious personal injury.
» Do not attempt to modify this machine or create accessories not recommended for use with this machine. Any such alteration or modification is misuse and could result in a hazardous condition leading to possible serious injury.

8.1 Required tools
For the assembly and maintenance the following tools are required:

  1. PH2 screwdriver (not included).
  2. Impact driver with 14 mm socket (not included).

8.2 Unfold the shaft
CAUTION

» In order to avoid pinching your hands or fingers, do not hold the shaft at the joints.
» Do not attempt to start the trimmer until the shaft has been locked.

  1. Remove the battery pack from the trimmer.
  2. Put your trimmer on the ground and carefully unfold the shaft. Make sure that the cable is inside the shaft so that it will not be pinched when closing the joints (Fig. 1).DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 1
  3. Use a screwdriver (not supplied) to lock the shaft with the two bolts supplied (Fig. 2).

DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 2

8.3 Mount the guard
CAUTION Always wear gloves when mounting or replacing the guard (E).
Be careful of the blade on the guard (E), and wear gloves to protect your hands from being injured by the blade.

  1. Remove the battery pack from the trimmer.
  2. Lay the trimmer on the ground or the floor with the trimmer head (H) facing upward.
  3. Insert the guard (E) into the groove of the trimmer head (H).
  4. Align the two bolts (supplied) with the two screw holes in the guard (E) (Fig. 3), and then tighten them with a screwdriver (not supplied) (Fig. 4).

DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 3

8.4 Mount and adjust the front-assist handle

  1. Remove the battery pack from the trimmer.

  2. Loosen the wing nut and remove it along with the hex bolt from the front-assist handle (B) (Fig. 5).DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 4

  3. Press the front-assist handle (B) onto the shaft, and assemble the hex bolt with the wing nut. Turn the front-assist handle (B) upward so that it points toward the top of the rear handle (D) (Fig. 6).
    DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 5

  4. Adjust the front-assist handle (B) position so that it is between the rear handle (D) housing and the hinge (A) of the shaft, as shown in Fig. 7. The handle (B) should be adjusted so that your front arm is straight when using the trimmer.
    DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 6

  5. Tighten the wing nut so that the handle (B) cannot be rotated on the shaft.

Operating Instructions

CAUTION
» To reduce the risk of fire, personal injury, and machine damage due to a short circuit, never immerse the machine, battery pack, or charger in fluid or allow a fluid to flow inside them. Corrosive or conductive fluids such as seawater, certain industrial chemicals, and bleach or bleach-containing products, etc. can cause a short circuit.
» Do not use any attachments or accessories not recommended by the manufacturer of this machine. The use of attachments or accessories not recommended can result in serious personal injury.
» Do not attempt to modify this machine or the battery pack or create accessories not recommended for use with this machine. Any such alteration or modification is misuse and could result in a hazardous condition leading to possibly serious injury.
» To prevent accidental starting that could cause serious personal injury, always remove the battery pack from the machine when assembling parts, making adjustments, cleaning, or when not in use.
» Do not allow familiarity with this machine to make you careless. Remember that a careless fraction of a second is sufficient to inflict serious injury.
» Always wear eye protection with side shields marked to comply with ANSI Z87.1, along with hearing protection. Failure to do so could result in objects being thrown into your eyes and other possibly serious injuries.

This trimmer must be used only with the battery packs and charger listed below:

Battery pack Charger
2 Ah  4 Ah

ASC5358B-02
ASC5385B-00
ABY5197B-00|  ABY5196B-00

NOTICE | Refer to the battery and charger manuals for detailed operating information.
9.1 To attach/detach battery pack
CAUTION
Battery operated tools are always in operating condition. Therefore, remove the battery when assembling parts, making adjustments, cleaning, when the machine is not in use, or when carrying it at your side. Removing the battery pack will prevent accidental starting that could cause serious personal injury.

9.1.1 To attach the battery pack
Align the raised rib on the battery pack with the grooves on the machine, and then slide the battery pack onto the machine.

NOTICE
» Make sure that the latch on the battery pack snaps into place and that the battery pack is secured to the tool before beginning operation.
» When placing the battery pack onto the machine, be sure that the raised rib on the battery pack aligns with the groove inside the machine and that the latches snap into place properly. Improper attachment of the battery pack can cause damage to internal components.

9.1.2 To detach the battery pack
Depress the battery release button, located on the front of the battery pack, to release the battery pack. Pull the battery pack out and remove it from the machine.

DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 7

9.2 To hold the string trimmer
CAUTION
» Dress properly to reduce the risk of injury when operating this machine. Do not wear loose clothing or jewelry. Wear eye and ear/hearing protection. Wear heavy, long pants, boots, and gloves.
» Do not wear short pants or sandals or go barefoot.

Before operating the machine, stand in the operating position and check that:

  1. The operator is wearing eye protection and proper clothing.
  2. One arm, which is holding the rear handle (D), is slightly bent.
  3. The other arm, which is holding the front-assist handle (B), is straight.
  4. The trimmer head (H) is parallel to the ground and easily contacts the material to be cut without the operator having to bend over (Fig. 10).

DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 8

9.3 To start/stop the string trimmer
Before starting the string trimmer:

  1. Make sure that you have a secure and balanced footing.
  2. Stand upright, and hold the string trimmer in a relaxed position.
  3. Make sure that the cutting line (K) is not touching the ground or any other objects.
  4. Hold the string trimmer with both hands, one hand on the rear handle (D) and one hand on the front-assist handle (B).

9.3.1 To start the string trimmer

DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 9 NOTICE The motor will only start when both the lock OFF button (F) and the trigger switch (G) are depressed.

9.3.2 To stop the string trimmer
Release the trigger switch (G) to stop the string trimmer.
CAUTION
Always remove the battery pack from the string trimmer during work breaks and after finishing work.

9.3.3 Speed selector

DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 10

This string trimmer gives you the choice to operate at a more efficient speed to extend the run time for larger jobs or accelerate the trimmer speed for high-performance cutting.
Push the speed selector (C) forward or backward to choose “HI” (high-speed, less energy efficient mode) or “LO” (lower-speed, more energy-efficient mode).
9.4 To use the string trimmer
CAUTION

»D To avoid serious personal injury, wear goggles or safety glasses at all times when operating this machine. Wear a face mask or dust mask in dusty locations.
»D To prevent serious personal injury, remove the battery pack from the tool before servicing, cleaning, changing attachments, or removing material from the machine.
» Clear the area to be cut before each use. Remove all objects, such as rocks, broken glass, nails, wire, or string that can be thrown or become entangled in the cutting attachment.
»b Clear the area of children, bystanders, and pets. Keep all children, bystanders, and pets at least 100 ft (30 m) away. There still may be risk to bystanders from thrown objects; bystanders should be encouraged to wear eye protection. If you are approached, stop the motor immediately.

Check for damaged/worn parts before each use.

Check the trimmer head (H), guard (E), and front-assist handle (B). Replace any parts that are cracked, warped, bent, or damaged in any away.
The line-cutting blade (L) on the edge of the guard (E) can dull over time. It is recommended that you periodically sharpen it with a file or replace it with a new blade.
CAUTION
Always wear gloves when mounting or replacing the guard (E) or when sharpening or replacing the blade. Note the location of the blade on the guard (E), and protect your hand from injury.

Clean the trimmer after each use.
See the “Cleaning and Maintenance” chapter in this manual for cleaning instructions.
CAUTION
Never use water to clean your trimmer. Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents. Use clean clothes to remove dirt, dust, oil, grease, etc.

9.4.1 Tips for best trimming results

DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 11

  1. The correct angle for the cutting attachment is parallel to the ground.
  2. Do not force the trimmer. Allow the very tip of the line to do the cutting (especially along walls). Cutting with more than the tip will reduce cutting efficiency and may overload the motor.
  3. The cutting height is determined by the distance of the cutting line (K) from the lawn surface.
  4. Grass should be cut by working progressively from top to the bottom in small increments to avoid premature line wear or motor drag.
  5. Slowly move the trimmer into and out of the area being cut, maintaining the cutting head position at the desired cutting height. This movement can be either a forward- backward motion or a side-to-side motion. Cutting shorter lengths produces best results.
  6. Trim only when grass and weeds are dry.
  7. Wire and picket fences can cause extra string wear or breakage. Stone and brick walls, curbs, and wood may wear strings rapidly.
  8. Avoid trees and shrubs. Tree bark, wood moldings, siding, and fence posts can easily be damaged by the strings.

9.4.2 To adjust the cutting-line length
The trimmer head (H) allows the operator to release more cutting line (K) without stopping the motor. As line becomes frayed or worn, additional line can be released by lightly tapping the trimmer head (H) on the ground while operating the trimmer (Fig. 14).

DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 12

CAUTION

» Donot remove or alter the line-cutting blade (L) assembly.
»b Excessive line length will cause the motor to overheat and may result in serious personal injury.

For best results, tap the trimmer head (H) on bare ground or hard soil. If line release is attempted in tall grass, the motor may overheat. Always keep the trimming line fully extended. Line release becomes more difficult as the cutting line (K) becomes shorter.
9.4.3 Line replacement
NOTICE : Always use the recommended nylon cutting line (K) with a diameter that does not exceed 0.080” (2.0 mm). Using line other than that specified may cause the string trimmer to overheat or become damaged.

CAUTION
» Never use metal reinforced line, wire, or rope, etc. These can break off and become dangerous projectiles.
» To prevent serious personal injury, remove the battery pack from the tool before servicing, cleaning, changing attachments, or removing material from the machine.

  1. Remove the battery pack from the trimmer.
  2. Cut one piece of cutting line (K) less than 16 ft (5 m) long. Insert the line into the eyelet. Push the line until the end of the line comes out of the other side of the trimmer head (H). Pull the line from the other side until equal amounts of line appear on both sides (Fig. 15).
  3. Hold the lower cover (J), and rotate the shroud in the direction indicated by the arrow to wind the cutting line (K) into the trimmer head (H) until approximately 4.6” (12 cm) of line is showing on each side (Fig. 16).DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 13
  4. Push down on the trimmer head (H) while pulling on the lines to manually advance the line and to check for proper installation of the cutting line (K).

9.4.4 Reload the cutting line (K)

NOTICE When the cutting line (K) breaks from the line outlet or the cutting line (K) is not released when the trimmer head (H) is tapped, you need to remove the remaining cutting line (K) from the spool retainer and follow the steps below to reload the line.

  1. Remove the battery pack from the trimmer.
  2. Press the release tabs (I) on the upper cover, and remove the lower cover (J) of the trimmer head (H) by pulling it straight out (Fig. 17 and 18).DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 14
  3. Remove the cutting line (K) from the spool retainer.
  4. With one hand holding the upper cover, use the other hand to grasp the lower cover (J) of the trimmer head (H), and align the tabs on the upper cover with the holes in the lower cover (J). Use your palm to press the lower cover (J) until it snaps into place (Fig. 19).DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 15
  5. Follow the instructions in the “Line replacement” chapter to reload the cutting line (K).

Cleaning and Maintenance

Periodically inspect the entire machine for damaged, missing, or loose parts such as screws, nuts, bolts, caps, etc. Tighten securely all fasteners and caps, and do not operate this machine until all missing or damaged parts are replaced.
CAUTION
» When servicing, use only identical replacement parts. Use of any other parts could create a hazard or cause machine damage.
»b Battery tools do not have to plugged into an electrical outlet therefore they are always in operating condition. To prevent serious personal injury, take extra precautions and care when performing maintenance or service or when changing the cutting attachment or other attachments.
» To avoid serious personal injury, always remove the battery pack from the tool when cleaning or performing any maintenance.
10.1 Trimmer head replacement
WARNING
Db If the head loosens after it is fixed in position, replace it immediately. Never use a trimmer with a loose cutting attachment. Replace a cracked, damaged, or worn out cutting head immediately, even if damage is limited to superficial cracks. Such attachments may shatter at high speed and cause serious or fatal injury.

10.1.1 Remove the Trimmer head

  1. Remove the battery pack from the trimmer.
  2. Press the release tabs (I) on the trimmer head (H), and remove the lower cover (J) of the trimmer head (H) by pulling it straight out.
  3. Remove the cutting line (K) from the trimmer head (H) (Fig. 20).
  4. Wear gloves. Use one hand to grasp the spool assembly to stabilize it, and use the other hand to hold an impact wrench with a 14 mm socket to loosen the nut by turning it counterclockwise (Fig. 21).DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 16
  5. Remove the nut, spool assembly, upper cover, and shroud from the motor shaft (Fig. 22).
  6. Replace with a new trimmer head (H), and mount it as follows.DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 17

10.1.2 Install a new trimmer head

  1. Mount the shroud assembly, the upper cover, spool assembly, and washer in that order. Use an impact wrench on the nut to tighten it.
  2. Following steps 4 and 5 in the “Reload the cutting line” chapter in this manual to mount the lower cover (J) assembly.
  3. Follow the instructions in the “Line replacement” chapter in this manual to reload the cutting line (K).
  4. Start the tool to see whether the string trimmer works normally. If it does not, reassemble as described above.

10.2 Clean the trimmer

  1. Clear any grass that may have wrapped itself around the motor shaft or trimmer head (H).
  2. Use a small brush or a small vacuum cleaner to clean the air vents.
  3. Keep the air vents free of obstructions.
  4. Clean the machine using a damp cloth with a mild detergent.
  5. Do not use any strong detergents on the plastic housing or the handle. They can be damaged by certain aromatic oils such as pine and lemon and by solvents such as kerosene. Moisture can also cause a shock hazard. Wipe off any moisture with a soft, dry cloth.

10.3 Sharpen the line-cutting blade
CAUTION
Always protect your hands by wearing heavy gloves when performing any maintenance on the line-cutting blade (L).

  1. Remove the battery pack from the machine. Remove the line-cutting blade (L) from the guard (E).
  2. Wear proper eye protection and gloves, and be careful not to cut yourself.
  3. Secure the blade in a vise.
  4. Carefully file the cutting edges of the blade with a fine-tooth file or sharpening stone, maintaining the original angle of the cutting edge.
  5. Replace the blade on the guard (E), and secure it in place with the two screws.

10.4 Storing the trimmer

  1. Remove the battery pack from the trimmer.
  2. Clean the machine thoroughly before storing it.
  3. Store the unit in a dry, well-ventilated area, locked up or up high, out of the reach of children.
  4. Do not store the unit on or adjacent to fertilizers, gasoline, or other chemicals.
  5. This trimmer is shipped with a storage rail (M) and storage adapter (N) for hanging the trimmer. To use them, securely mount the storage rail (M), horizontally leveled, on the wall with 2 screws (not supplied). Use screws sufficiently strong to hold the combined weight of the trimmer and battery pack.

Attach the storage adapter (N), and move it against the mounting base of the storage rail (M). Store the machine with the storage hole (O) in the handle over the tip of the storage adapter (N) (Fig. 23).

DENALI C1TMe-9U2PL 20V 13 Inch String Trimmer - Fig 18

Troubleshooting

Problem Cause Solution
String trimmer fails to start. » The battery pack is not attached to the

trimmer.
» No electrical contact between the trimmer and the battery pack.
» The battery pack is depleted.
» The lock OFF button (F) and trigger switch (G) are not depressed simultaneously.| » Attach the battery pack to the trimmer.
» Remove battery, check contacts, and reinstall the battery pack.
» Charge the battery pack.
» Press down on the lock OFF button (F) and hold it, then depress the trigger switch (G) to turn on the string trimmer.
» Remove the battery pack, and mount the guard (E) on the trimmer.
String trimmer suddenly stops while cutting.| » The guard (E) is not mounted on the trimmer, resulting in an overly long cutting line {K) and motor overload.
» Incorrect cutting line (K) is used.
» The motor shaft or trimmer head (H) is bound with grass.
» The motor is overloaded.
» The battery pack or string trimmer is too hot.
» The battery pack is disconnected from the tool.
» The battery pack is depleted.| » Use recommended nylon cutting line (K) with diameter no greater than 0.080″ (2.0 mm).
» Stop the trimmer, remove the battery, and remove the grass from the motor shaft and trimmer head (H).
» Remade the trimmer head (H) from the grass. The motor will return to work when the load is removed. When cutting, move the trimmer head (H) in and out of the grass to be cut, and do not remove grass too long in a single cut.
» Allow the battery pack or trimmer to cool down.
» Reinstall the battery pack.
» Charge the battery pack.
Trimmer head (H) will not advance line.| » The motor shaft or trimmer head (H) is bound with grass.
» There is not enough line in the trimmer head (H), or the line breaks from the eyelet.
» The line is tangled in the trimmer head (H).
» The line is too short.| » Stop the trimmer, remove the battery, and clean the motor shaft and trimmer head (H).
» Remove the battery and replace the cutting line (K) by following the “Line replacement” chapter in this manual.
» Remove the battery. Remove the line from the Trimmer head (H) and rewind by following the “Line replacement” chapter in this manual.
» Remove the battery, and pull the line manually while alternately pressing down and releasing the trimmer head (H).
Grass wraps around trimmer head
(H) and motor housing.| » Cutting tall grass at ground level.| » Cut tall grass from the top down; do not try to cut grass that is too long in one Pass to prevent wrapping.
The line- cutting blade (L) is not
cutting the line.| » The line-cutting blade {L) on the edge of the guard (E) has become dull.| » Sharpen the line-cutting blade (L) with a file, or replace it with a new blade.
Cracks on the trimmer head (H) or
the spool assembly comes loose.| » The trimmer head (H) is worn out.
» The nut that locks the trimmer head (H) is loose.| » Replace the trimmer head (H) immediately following the “Trimmer head replacement” chapter in this manual.
» Open the trimmer head (H), and use an impact wrench (14 mm) to tighten the nut.

FCC – Supplier’s Declaration of Conformity

Unique Identifier ALT4823B-00 – Brushless 20 V 13-Inch String Trimmer
Responsible Party Amazon.com Services LLC.
U.S. Contact Information 410 Terry Ave N. Seattle, WA 98109 USA
Telephone Number 206-266-1000

12.1 FCC Compliance Statement

  1. This device complies with Part 1S of the FCC Rules. Operation is subject to the following two conditions:
    (1) this device may not cause harmful interference, and
    (2) this device must accept any interference received, including interference that may cause undesired operation.

  2. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

12.2 FCC Interference Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 1S of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This  equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a  particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the equipment and receiver.
  • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio / TV technician for help.

Canada IC Notice

This Class B digital apparatus complies with Canadian CAN ICES-003(B) / NMB-003(B) standard.

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V02-07/22

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